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How much heat (in kJ) is needed to convert 866 g of ice at -15 degress celsius to steam at 146 degrees Celsius? (The specific heats of ice and steam are 2.03 and 1.99 J/g x C respectively)
When 2.45 g of an unknown weak acid HA with a molar mass of 85.0g /mol is dissolved in 250.0g of water, the freezing point of the resulting solution is -0.256 C.
How many kilojoules of heat are required to melt a 10.0-g popsicle at 0 C? Assume the popsicle has the same molar mass and heat of fusion as water.
How many moles of each are present in the eq mixture b)Calculate the equilibrium constant
For AuCl, Ksp = 2.0 x 10-13 at 25°C. What is the solubility of AuCl at this temperature?
What mass of iron would be required to cover a football playing surface of 120 yds × 60 yds to a depth of 1.0 mm?
In the photosythesis process sugars are produced during the reaction of carbon with water Assuming air is composed of 0.030% carbon dioxide calculate the volume of air required at reference conditions to produce 1.0kg of sugar.
Determine the theoretical and percent yields of ethanol if 684g sucrose undergoes fermentation and 349g ethanol is obtained?
By Solving this problem student is able to understand how to calculate theoretical and percent yields in an experiment - determine theoretical and percent yields for this experiment.
calculate the pH of a sodium cyanide solution that is 0.37M NaCN. The Ka for hydrocyanic acid HCN is 4.00E-10.
What actions should an exposed person take during the immediate aftermath of the explosion?
calculate the solubility of potassium bromide at 23 degrees celuius.assume that the solubility increases by an equal amount for each degree between 20 and30 degrees
how many grams of carbon are required to react with 1.5x10^25 atoms of hydrogen to form CH4
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